I have it, I can't run it of full settings either it does some wierd stuff with the trees, but I can run it on the next setting down and it's very good, FPS is high. I don't think I could play it with a load of stuff happening though...similar to CoD, I can fly with 20 or so planes but any more and it starts to be a bit jumpy.
I'm quite happy with how CoD is playing graphically, just wish my multiplayer worked, but that was my fault for installing the beta patch